Scaffolding-bracket.



No. 767,768. PATENTED AUG. 16, 1904. J. M. SAGKMAN.

SGAFPOLDING BRACKET.

APPLICATION FILED FEB. 23, 1904.

N0 MODEL.

Wdrceas e a: 717/63 711% 7":

UNTTED STATES Patented August 16, 1904.

JOHN M. SACKMAN, OF GARROLLTON, ILLINOIS.

SCAFFOLDlNG-BRACKET.

SPECIFICATION formingpart of Letters Patent No. 767,768, dated A g 16,1904.

Application filed February 28, 1904. Serial No. 194,777. No model.)

To all whom it may concern.-

the object of my invention is to provide a construction whereby thebracket holding the weight of the scaffolding-plank is gripped to thestrongest part of the ladder and so gripped that it may be readilyraised or lowered without removing the scaffolding-plank. This featureis most desirable, particularly in housepainting.

Vith the above primary object in view my invention consists of thedevices and. parts or their equivalents as hereinafter set forth.

In the accompanying drawings, Figure 1 is an elevation of my devicegripped to the side of a ladder. Fig. 2 is an edge view of the lowergripwith bar on which rides the scaffolding-plank. (Not shown.) Fig. 3is a side view of the bar which carries scaffoldingplank, (not shown,)showing openings through the ends. Fig. 4 is an edge view of the uppergrip; Fig. 5, an edge view of the notched bar,showing the fork and boltpassing through it. Fig. 6 is a top view of the bent rod with endspassing through the arched frame.

Referring to the drawings, the numeral 1 is a section of the stile of aladder.

The letter (Z indicates the arched frame of the construction, havingfirmly attached thereto the V-shaped gripping-plate b, (seeFig. 4;) c,the plate having rod 0, with its end bent to a right angle at 0extending inwardly, attached are pivoted together; 71., the rod withends bent to right angles, said ends passing through arched frame (Z(see Fig. 6) and securely attached thereto; Z, the locking-plate, whichis free to turn on arm of rod it at 7. (See Fig.6.)

To operate my device, I place the arched frame (Z sothat the V-shapedgripping-plate Z) comes in contact with one side of the stile of aladder and the rod 0, which extends inwardly from the plate 0, comes incontact with the other side of the stile, as shown in Fig. l. The bar (Zis then engaged with 0' by passing the opening in the end of said barover the bend at 0 (See Fig. 2.) The notched bar 0 is then passedthrough the opening between the bent portions of the rod h and one ofthe hooked notches e engaged with the rod it at f. (See Fig. 6.) Theforked endf is loosely engaged with the end of bar (Z by reason of thebolt g (see Fig. 5) passing through it. The locking-plate 2', which ispivoted on the bent rod 71, at j (see Fig. 6) is then turned so that itwill come in contact with operator simply grasps the arched frame (Lbetween the bar 0 and the side of the ladder and causes sufi'icientpressure to bear on the under side of said frame (Z to counterbalancethe weight of the scaffolding-plank (not shown) resting on bar (Z, andthis will free the gripping-plates Z) and 0. Then by raising or loweringthe bracket he will bring his scaffolding to the desired position. Oneof these brackets is necessary at each end of the scaffoldingplank. Itis obvious that as the pitch of the ladder is necessarily changed itwill of course be necessary to change the angle of the bar (Z, whichholds the scaffolding-plank (not shown) in order that said plank may bekept at a right angle to the side of the building. To accomplish this,the operator after he has placed his ladder throws the locking-platefont of engagement with the notched bar 0 and raises or lowers said bar0 to another notch, which is then again hooked over bent rod Zt (seeFig. 6) at and the locking-plate is again turned on its pivot j, whichfirmly locks bar (2, as above set forth.

lt will be noticed by referring to Fig. 1 of the drawings that thebracket is gripped near the upper end and outside of the ladder, as theworkman by lowering the bracket would soon become too farfrom his workto reach it conveniently. Said bracket can be very readily changed tothe inside, when it will be gripped on the opposite stile of the ladder.

It is an obvious fact that the gripping power of my device is increasedas the weight upon the scaffolding plank is increased. Therefore thesafety of said device is correspondingly increased.

Having thus fully described my invention, 1 claim as new and desire tosecure by Letters Patent 1. The combination of the stile of a ladder 1,the arched frame or bar a, the grippingplate b and the plate 0 attachedthereto said plate 0, having the rod 0, connected thereto and meansattached to this frame a, to carry the end of a scaffolding-plank as setforth.

2. In combination with the stile of a ladder 1, the arched frame or bara, the gripping plate .7), formed in a V-shape plate, the plate 0, withthe rod 0, extending inwardly, the bent rod 7b, with its arms 7, 7",said arms passing through and firmly attached to frame a, thelocking-plate z', pivoted at 7'.

3. In a scaffolding-bracket, the combination With the stile of a ladder,of an arched frame,

the gripping-plate, arod attached. to the lower plate and adapted toengage with the side of l the ladder, a bent rod with its arms fast tothe overhanging ends of the frame, a lockingplate, a notched bar, oneend of Which passes through an opening formed at the side of theoverhanging end of the frame, the other end of'said bar loosely attachedto a bar on Which rests a scaffolding-plank, and the other end of thisbar engaged with the rod 0' extending from plate c, and adapted, so thatwhen the notched bar is raised or lowered, different notches Will engagewith one end of the opening formed at the side of the overhanging end ofthe frame, the angle of the said bar carrying the scaffolding-plank willbe changed.

4. In combination With a ladder, the arched frame a, the gripping-plateb, and the plate 0, with arm 0 extending therefrom and adapted to restagainst the stile of a ladder, the bent rod 71., the locking-plate oi,the notched bar a, the bar (Z, all adapted substantially as set forth tocarry a scaffolding-plank and to grip the stile of a ladder or timber insuch a Way that the Whole construction may be readily raised and loweredWithout removing the scaffoldingplank and also the angle of said plankmay be changed as the pitch of the ladder is changed.

JOHN M. SACKMAN.

Witnesses:

WILLIAM LAVERY, M. T. (JULWELL.

